61649308849274 has 4 divisors (see below), whose sum is σ = 92473963273914. Its totient is φ = 30824654424636.

The previous prime is 61649308849267. The next prime is 61649308849319. The reversal of 61649308849274 is 47294880394616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43174295611225 + 18475013238049 = 6570715^2 + 4298257^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61649308849198 and 61649308849207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15412327212317 + ... + 15412327212320.

Almost surely, 2^{61649308849274} is an apocalyptic number.

61649308849274 is a deficient number, since it is larger than the sum of its proper divisors (30824654424640).

61649308849274 is a wasteful number, since it uses less digits than its factorization.

61649308849274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30824654424639.

The product of its (nonzero) digits is 501645312, while the sum is 71.

The spelling of 61649308849274 in words is "sixty-one trillion, six hundred forty-nine billion, three hundred eight million, eight hundred forty-nine thousand, two hundred seventy-four".